Finding the Fourth Proportional to 991,683,647.40, 1,487,525,471.10 and 884,545,141.80
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Solution
The fourth proportional to 991,683,647.40, 1,487,525,471.10 and 884,545,141.80 is: 1,326,817,712.70
Step by Step Solution
- Step 1: Write the proportion equation
991,683,647.40 : 1,487,525,471.10 = 884,545,141.80 : x - Step 2: Convert to fraction form
991,683,647.40/1,487,525,471.10 = 884,545,141.80/x - Step 3: Cross multiply
991,683,647.40x = 1,487,525,471.10 × 884,545,141.80 - Step 4: Simplify right side
991,683,647.40x = 1,315,783,428,765,261,056 - Step 5: Solve for x
x = 1,315,783,428,765,261,056/991,683,647.40 - Step 6: Final answer
x = 1,326,817,712.70
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Double scale
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.